Making use of the points measured on the drum helical curve of concrete-mixer truck, the helical Angle formula of the helical curve is obtained by means of least square method.
利用测得的混凝土搅拌车拌桶螺旋线上的一组离散点，通过最小二乘法拟合出了求解拌桶螺旋线螺旋角的公式。
Making use of the points measured on the drum helical curve of concrete-mixer truck, the helical Angle formula of the helical curve is obtained by means of least square method.
利用测得的混凝土搅拌车拌桶螺旋线上的一组离散点，通过最小二乘法拟合出了求解拌桶螺旋线螺旋角的公式。
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